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XI

The crossed roller bearing with internal gear teeth is preloaded, sealed, and features a lubrication nipple on the circumference of the ring without teeth. This configuration ensures precise rotational control and efficient power transmission, making it suitable for applications requiring high accuracy and reliability. The preloaded design minimizes internal clearance, reducing vibration and improving positional accuracy during operation. Sealing protects against contaminants, prolonging bearing life in harsh environments. The lubrication nipple allows for easy maintenance, ensuring optimal lubrication for smooth and reliable performance over time. This bearing type is ideal for robotics, machine tools, and other industrial applications where precision and durability are critical.

Standard

GB,ASTM/AISI,ГОСТ,BS,JIS,NF,DIN/VDEh,DIN/VDEh

Inner diameter

120mm-8000mm

Outer diameter

280mm-8000mm

Weight

20kg-8000kg

Structures

Outer Ring, Inner Ring, Spacer, Rolling element, Seal

Brand

QIBR/OEM/Neutral

Package

Standard Export Package

Material

42CrMo, 50Mn, or Stainless Steel

Applications

Hoisting machinery, construction machinery, material handling machinery, mining machinery, metallurgical machinery, medical instruments,ships and warships, radar,wind turbine

QIBR Model Selection

Filters

Gear type

Inner ring height (h)

Outer diameter (Da)

Overall height (H)

Weight

Inner diameter (di)

NO.	Product Number	Gear type	Inner ring height (h)	Outer diameter (Da)	Overall height (H)	Weight	Inner diameter (di)
1	XI 12 0288 N	Internal Gear	33 mm	340 mm	38 mm	12 kg	216 mm
2	XI 12 0321 V	Internal Gear	33 mm	383 mm	38 mm	15 kg	257.2 mm
3	XI 12 0420 N	Internal Gear	34 mm	486 mm	39 mm	23 kg	332 mm
4	XI 16 0489 N	Internal Gear	40 mm	562 mm	45 mm	35 kg	384 mm
5	XI 18 0635 N	Internal Gear	47 mm	722 mm	54 mm	67 kg	504 mm
6	XI 20 0720 N	Internal Gear	51 mm	812 mm	58 mm	84 kg	584 mm
7	XI 18 0865 N	Internal Gear	47 mm	952 mm	54 mm	93 kg	736 mm
8	XI 20 1100 N	Internal Gear	54 mm	1200 mm	70 mm	150 kg	950 mm

Features and advantages of QIBR XI series cross cylindrical roller slewing bearings

The QIBR XI series cross cylindrical roller slewing bearings come with multiple significant features and advantages, playing an essential role across various industries, including:

1. QIBR XI series cross cylindrical roller slewing bearings have excellent load capacity for manding applications

The QIBR XI series cross cylindrical roller bearings are engineered to simultaneously handle radial and axial forces in multiple directions, excelling under heavy loads and impact conditions.

2. Superior stability and extended lifespan of QIBR XI series cross cylindrical roller slewing bearings

The QIBR XI series cross cylindrical roller slewing bearings are manufactured with exceptional precision and tight assembly clearance. These design features ensure superior operational stability, effectively reducing system vibrations and noise. As a result, the bearings improve overall smoothness and reliability, significantly extending their service life.

3. Tailored solutions of QIBR XI series cross cylindrical roller bearings

QIBR offers customized services for the XI series, allowing bearings to be designed for specific needs and to meet the unique demands of various industries and applications.

4. The efficient power transmission of QIBR XI series cross cylindrical roller slewing bearings

Their internal gear directly connects QIBR XI series bearings to gear-driven systems, providing highly efficient power transmission. This reduces the need for extra components like chains or belts, minimizing mechanical losses and maintenance.

Performance enhancements and solutions of QIBR XI series cross cylindrical roller bearings

1. Improvement of bearing material characteristics

Built for harsh conditions, the QIBR XI series cross cylindrical roller slewing bearings can be crafted from 440C stainless steel. This ensures outstanding corrosion resistance against moisture, chemicals, and other corrosive agents, maximizing their durability and service life.

2. Improvement of bearing rotational accuracy

QIBR cross cylindrical roller bearings XI series are manufactured with state-of-the-art processing equipment and techniques, including precision heat treatment and advanced machining centers. These processes significantly improve the geometric accuracy of the inner and outer rings, reduce machining errors, and enhance the rotational accuracy and stability of the bearings.

3.Minimized maintenance and replacement

The QIBR XI series cross cylindrical roller slewing bearings incorporate seals that prevent external contaminants from entering and reduce the risk of grease leakage. Additionally, the lubrication holes enable convenient grease application, improving bearing longevity and minimizing maintenance and replacement expenses.

4. Customized design

For different occasions, the QIBR cross cylindrical roller bearings XI series can be tailored with individual dimensional solutions for special applications. This design not only enriches the standard of bearings but also demonstrates our commitment to providing practical guidance for manufacturers to meet the individual needs of users, making them feel catered to and valued.

In short, optimizing materials, precision, and customized design can significantly enhance the performance of QIBR cross cylindrical roller bearings XI series to satisfy stringent application demands.

Main application fields of QIBR cross cylindrical roller bearings XI series

Medical instruments

Applied in advanced medical systems, including CT imaging machines and surgical tables, the QIBR XI series cross cylindrical roller slewing bearings ensure stable performance and high-precision positioning, meeting the rigorous demands of healthcare environments.

Heavy machinery

Engineered for performance, the QIBR XI series bearings excel in cranes, excavators, and heavy equipment, delivering exceptional load-bearing capacity and reliable, stable support under heavy-duty conditions.

Ships and ocean engineering

The QIBR XI series cross cylindrical roller slewing bearings are widely utilized in ship rotary equipment and offshore platforms. Their robust design ensures high load capacity and resistance to harsh marine environments, meeting the demanding requirements of maritime and offshore applications.

Constructing premium-grade machinery

Engineered for precision, the QIBR XI series bearings are essential in machine tools and automation systems, boosting machining accuracy and efficiency for high-performance operations.